Electric-wire connecter



May 4,1926.

W. P. MARR ELECTRI C WIRE CONNECTER Filed March 3 1923 j Patented May 4,. 1926.

UNITED. STATES PATENT OFFICE.

WILLIAM P. MARR, F TORONTO, ONTARIO, CANADA.

ELECTRIC-WIRE CONNECTER.

Application led `March 3, 1923. Serial No. 622,554.

the Dominion of Canada, have invented cerfl tain new and useful Improvements in-an Electric-Tire Connecter, described in Vthe following specification and illustrated in thc accompanying drawings that form part of the same. y

The objects of this invention are to eliminate the detrimental conditions incident toA the joining of electric wires, particularly in ,15 the asssembling of electric fixtures and to l(provide a mechanical connecter which-will hold the wiresl securely and thoroughly insulated without the useof heat or of tape` The principal feature of the invention consists in providing a tubular member closed at one end to receive and rigidly hold the wire ends and to provide a tubular insulatingenclosure for the aforesaid tube.

-In the drawings, Figure lis a `perspective view ofthe inner connecting member arranged upon the wire 'ends connected and the outer insulating member separated therefrom. v Figure 2 is an enlarged longitudinal sec- 80 tional view of the assembled device.

It is Well known to electricians that the wiring of fixtures is extremely diiiicult owing to the closeness of walls, ceilingsik and expensive decorations which are very easily '1 marred by the spattering of solder flux or byV smoke in the soldering of the joints. Further, it is frequently very diiiicult to properly tape a jointed end. Wire connecters of various kinds have 40 been proposed' for fastening the adjacent ends of wires together but these'have been mostly of the type' wherein a continuous connection was desired, `that is, with a wire running through. In fixture work it-,is common practice to lay the flexible wires alongslde the permanent and twist them together after which they are soldered andtaped.

The present invention comprises a tubular member 1 closed at one end, the bore2 being sufficiently large to receive any desirable entering said member transversely and exnnmber of wire ends. The wire ends in serted into the tubular member are secured in place by a grub screw 4, the lesser diameter of which corresponds with the diameter of the longitudinal bore sothat the screw obtains support for a considerable depth and is not just dependent upon threads in the thickness of the tubular material.

The member l is machined with a thread 5 on its external surface atV the open end.

The wire ends are securely twisted togetherand inserted into the tubular member '1 and clamped securely therein, making perfect contact by means of the screw 4.-. l

A tubular member 6 in the. form of a cylinder having anv internal threaded surface is adapted to extend over and enclose the tubular memberl. This sleeve member iS. suiciently long to extend well up upon the insulation of the wires completely covering over the tubular'metal member 1 and also completely insulating the wires. Y

In` the use of this device, the electrician merely bares and twistshis wire ends together. He then caps them with a sleeve l which he rigidly secures in place by means of the grub screw, which on account of its long thread bearing may be tightened very securely Without danger of stripping. The outer insulating tubular enclosure is then threaded on .to the metallic cap and the job is completed. j

The operation is thus extremely s1mple and inexpensive and-therefore is extremely` desirable. Y

What I claim as my invention 1s An electric wire connecter,`comprising, a tubular metal member capable of receiving a multiplicity of wire ends, a metal screw4 tendingcompletely "across the diameter of the bore'thereof and adapted to clamp the v,wire ends securely together and against the wall of said tubular member, and a separable closed tubular insulatingmemberlitted over the metal tube ,and completelyenclos! 'ing the perimeter of said tube and said screw. Ay'.

' WILLIAM P, Maan 

